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SEGMENT INFORMATION Reconciliation of Reportable Results (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Reconcilitation between statement results and enterprise results [Abstract]
Total reportable segment income from operations	$ 1,256	$ 1,202	$ 1,104
Amortization	(184)	(125)	(105)
Acquisition and integration costs	(41)	(48)	(23)
Transformational initiatives	(53)	(44)	(25)
Share-based Payment Arrangement, Accelerated Cost	(2)	0	0
Asset impairment charges	99	0	21
Business exit and divestiture costs	(2)	0	(9)
NASD Site costs	0	(12)	(8)
Special compliance costs	0	(2)	(4)
Other	(29)	(30)	(5)
Interest income	(8)	(36)	(38)
Interest Expense	(78)	(74)	(75)
Other income (expense), net	66	16	79
Income before taxes	$ 842	$ 919	$ 946

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Amount of an item in the reconciliation of total profit or loss from reportable segments to the entity's consolidated income before income taxes, extraordinary items, discontinued operations.

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